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What is the Least Common Multiple of 31146 and 31156?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least common multiple (LCM) of 31146 and 31156 is 485192388.

LCM(31146,31156) = 485192388

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Least Common Multiple of 31146 and 31156 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31146 and 31156, than apply into the LCM equation.

GCF(31146,31156) = 2
LCM(31146,31156) = ( 31146 × 31156) / 2
LCM(31146,31156) = 970384776 / 2
LCM(31146,31156) = 485192388

Least Common Multiple (LCM) of 31146 and 31156 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31146 and 31156. First we will calculate the prime factors of 31146 and 31156.

Prime Factorization of 31146

Prime factors of 31146 are 2, 3, 29, 179. Prime factorization of 31146 in exponential form is:

31146 = 21 × 31 × 291 × 1791

Prime Factorization of 31156

Prime factors of 31156 are 2, 7789. Prime factorization of 31156 in exponential form is:

31156 = 22 × 77891

Now multiplying the highest exponent prime factors to calculate the LCM of 31146 and 31156.

LCM(31146,31156) = 22 × 31 × 291 × 1791 × 77891
LCM(31146,31156) = 485192388